Rotationally Invariant Convolutional Channel Coding with Expanded Signal Space-Part I: 180°
Rotationally Invariant Convolutional Channel Coding with Expanded Signal Space-Part I: 180°
复制标题
具有扩展信号空间的旋转不变卷积通道编码-第一部分：180°
DOI：
10.1109/jsac.1984.1146114
复制
发表时间：
1984
期刊：
影响因子：
--
通讯作者：
Lee
中科院分区：
文献类型：
--
作者：
Lee
扩展信号空间的卷积信道编码在不牺牲数据速率或不需要更多带宽的情况下提高了同步数据链路的误差性能。由于扩展后的信号空间中存在相位模糊，因此希望设计出对信号元件旋转透明的编码。本文给出了180°旋转不变码的设计原则和步骤。在另一篇论文中，我们将这些规则和程序扩展到对90°、180°和270°信号元件旋转透明的代码中。我们通过设计实现3-4 dB编码增益的简单代码来说明这些规则和程序。这些是实际利益的准则。使用相同的规则和程序可以获得更高编码增益的代码。同时考虑了前馈和反馈编码。
Convolutional channel coding with expanded signal space improves error performance of synchronous data links without sacrificing data rate or requiring more bandwidth. Due to the phase ambiguity(ies) in the expanded signal space, it is desirable to design the code' to be transparent to signal element rotations. In this paper, design rules and procedures for 180° rotationally invariant codes are presented. In a companion paper, we extend these rules and procedures to codes which are transparent to 90, 180, and 270° signal element rotations. We illustrate these rules and procedures by designing simple codes that achieve coding gain of 3-4 dB. These are the codes of practical interest. Codes with higher coding gain can be obtained using the same rules and procedures. Both feedforward and feedback codes are considered.
影响因子：
2.5
作者：
UNGERBOECK, G
通讯作者：
UNGERBOECK, G